Enable and fix some more clippy lints (#7426)

One can never have too many lints

crates/egui_demo_lib/src/demo/misc_demo_window.rs

@@ -805,7 +805,7 @@ impl TextRotation {
                 if let egui::epaint::Shape::Text(ts) = &mut t {
                     let new = ts.clone().with_angle_and_anchor(self.angle, self.align);
                     *ts = new;
-                };
+                }
 
                 t
             });
@@ -814,7 +814,7 @@ impl TextRotation {
                 let align_pt =
                     rect.min + start_pos + self.align.pos_in_rect(&ts.galley.rect).to_vec2();
                 painter.circle(align_pt, 2.0, Color32::RED, (0.0, Color32::RED));
-            };
+            }
 
             painter.rect(
                 rect,

crates/egui_demo_lib/src/demo/paint_bezier.rs

@@ -152,7 +152,7 @@ impl PaintBezier {
             _ => {
                 unreachable!();
             }
-        };
+        }
 
         painter.add(PathShape::line(points_in_screen, self.aux_stroke));
         painter.extend(control_point_shapes);

crates/egui_demo_lib/src/easy_mark/easy_mark_editor.rs

@@ -165,7 +165,7 @@ fn shortcuts(ui: &Ui, code: &mut dyn TextBuffer, ccursor_range: &mut CCursorRang
         if ui.input_mut(|i| i.consume_shortcut(&shortcut)) {
             any_change = true;
             toggle_surrounding(code, ccursor_range, surrounding);
-        };
+        }
     }
 
     any_change

crates/egui_demo_lib/src/easy_mark/easy_mark_viewer.rs

@@ -101,7 +101,7 @@ pub fn item_ui(ui: &mut Ui, item: easy_mark::Item<'_>) {
                 Shape::rect_filled(rect, 1.0, code_bg_color),
             );
         }
-    };
+    }
 }
 
 fn rich_text_from_style(text: &str, style: &easy_mark::Style) -> RichText {